54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
// Copyright 2018 Google Inc. All Rights Reserved.
|
|
//
|
|
// This file contains the declarations for the EventMetric class and related
|
|
// types.
|
|
#ifndef WVCDM_METRICS_ATTRIBUTE_HANDLER_H_
|
|
#define WVCDM_METRICS_ATTRIBUTE_HANDLER_H_
|
|
|
|
#include "OEMCryptoCENC.h"
|
|
#include "field_tuples.h"
|
|
#include "log.h"
|
|
#include "metrics.pb.h"
|
|
#include "pow2bucket.h"
|
|
#include "value_metric.h"
|
|
#include "wv_cdm_types.h"
|
|
|
|
namespace wvcdm {
|
|
namespace metrics {
|
|
|
|
// This method is used to set the value of a single proto field.
|
|
// Specializations handle setting each value.
|
|
template <int I, typename F>
|
|
void SetAttributeField(const F& value, drm_metrics::Attributes* attributes);
|
|
|
|
// This class handles serializing the attributes for metric types that breakdown
|
|
// into multiple buckets. The template parameters should be specified in pairs.
|
|
// E.g. I1 and F1 should match. I1 should specify the field number in the proto
|
|
// and F1 should specify the type of the field to be set.
|
|
template <int I1, typename F1, int I2, typename F2, int I3, typename F3, int I4,
|
|
typename F4>
|
|
class AttributeHandler {
|
|
public:
|
|
// This method returns the serialized attribute proto for the given field
|
|
// values. The order of the field values must match the order in the
|
|
// template.
|
|
std::string GetSerializedAttributes(F1 field1, F2 field2, F3 field3,
|
|
F4 field4) const {
|
|
drm_metrics::Attributes attributes;
|
|
SetAttributeField<I1, F1>(field1, &attributes);
|
|
SetAttributeField<I2, F2>(field2, &attributes);
|
|
SetAttributeField<I3, F3>(field3, &attributes);
|
|
SetAttributeField<I4, F4>(field4, &attributes);
|
|
std::string serialized_attributes;
|
|
if (!attributes.SerializeToString(&serialized_attributes)) {
|
|
LOGE("Failed to serialize attribute proto.");
|
|
return "";
|
|
}
|
|
return serialized_attributes;
|
|
}
|
|
};
|
|
|
|
} // namespace metrics
|
|
} // namespace wvcdm
|
|
#endif // WVCDM_METRICS_ATTRIBUTE_HANDLER_H_
|